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THE Java™ Programming Language, Fourth Edition
book

THE Java™ Programming Language, Fourth Edition

by Ken Arnold, James Gosling, David Holmes
August 2005
Intermediate to advanced content levelIntermediate to advanced
928 pages
20h 39m
English
Addison-Wesley Professional
Content preview from THE Java™ Programming Language, Fourth Edition

Chapter 4. Interfaces

 

“Conducting” is when you draw “designs” in the nowhere—with your stick, or with your hands—which are interpreted as “instructional messages” by guys wearing bow ties who wish they were fishing.

 
 --Frank Zappa

The fundamental unit of programming in the Java programming language is the class, but the fundamental unit of object-oriented design is the type. While classes define types, it is very useful and powerful to be able to define a type without defining a class. Interfaces define types in an abstract form as a collection of methods or other types that form the contract for that type. Interfaces contain no implementation and you cannot create instances of an interface. Rather, classes can expand their own types by implementing ...

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Publisher Resources

ISBN: 0321349806Purchase book